I love the electoral college, but the graphic in the OP is wildly untrue.
LA County has about 10m folks. The blue area far exceeds that.
Fact. Those are all states that (each) are smaller than LA Country. Not combined are smaller than LA county. So the image is mistaken at best, or attempting to be deliberately misleading.
Edit: And that's not even talking about the weird spin on homelessness. I'm no fan of LA county (I like lots of places in California actually... LA is NOT one of them), but it's such an odd and complex point to take on to make a political statement.